Darwin, with his Origin of Species, his theories about Natural Selection, the Survival of the Fittest, and the influence of environment, shed a flood of light upon the great problems of plant and animal life.These things had been guessed, prophesied, asserted, hinted by many others, but Darwin, with infinite patience, with perfect care and candor, found the facts, fulfilled the prophecies, and demonstrated the truth of the guesses, hints and assertions. He was, in my judgment, the keenest observer, the best judge of the meaning and value of a fact, the greatest Naturalist the world has produced.The theological view began to look small and mean.Spencer gave his theory of evolution and sustained it by countless facts. He stood at a great height, and with the eyes of a philosopher, a profound thinker, surveyed the world. He has influenced the thought of the wisest.Theology looked more absurd than ever.Huxley entered the lists for Darwin. No man ever had a sharper sword -- a better shield. He challenged the world. The great theologians and the small scientists -- those who had more courage than sense, accepted the challenge. Their poor bodies were carried away by their friends.Huxley had intelligence, industry, genius, and the courage to express his thought. He was absolutely loyal to what he thought was truth. Without prejudice and without fear, he followed the footsteps of life from the lowest to the highest forms.Theology looked smaller still.Haeckel began at the simplest cell, went from change to change -- from form to form -- followed the line of development, the path of life, until he reached the human race. It was all natural. There had been no interference from without.I read the works of these great men -- of many others – and became convinced that they were right, and that all the theologians -- all the believers in "special creation" were absolutely wrong.The Garden of Eden faded away, Adam and Eve fell back to dust, the snake crawled into the grass, and Jehovah became a miserable myth.
Mind you, I cannot swear that my story is true. It may have been a dream; or worse, a symptom of some severe mental disorder. But I believe it is true. After all, how are we to know what things there are on earth? Strange monstrosities still exist, and foul, incredible perversions. Every war, each new geographical or scientific discovery, brings to light some new bit of ghastly evidence that the world is not altogether the same place we fondly imagine it to be. Sometimes peculiar incidents occur which hint of utter madness.How can we be sure that our smug conceptions of reality actually exist? To one man in a million dreadful knowledge is revealed, and the rest of us remain mercifully ignorant. There have been travelers who never came back, and research workers who disappeared. Some of those who did return were deemed mad because of what they told, and others sensibly concealed the wisdom that had so horribly been revealed. Blind as we are, we know a little of what lurks beneath our normal life. There have been tales of sea serpents and creatures of the deep; legends of dwarfs and giants; records of queer medical horrors and unnatural births. Stunted nightmares of men's personalities have blossomed into being under the awful stimulus of war, or pestilence, or famine. There have been cannibals, necrophiles, and ghouls; loathsome rites of worship and sacrifice; maniacal murders, and blasphemous crimes. When I think, then, of what I saw and heard, and compare it with certain other grotesque and unbelievable authenticities, I begin to fear for my reason.